ANALOG DEVICES ADA4899-1 Data Sheet User Guide

Unity-Gain Stable, Ultralow Distortion, 1 n V/√Hz Voltage Noise, High Speed Op Amp

ADA4899-1 FEATURES CONNECTION DIAGRAMS Unity-gain stable ADA4899-1

1DISABLE +VS8

Ultralow noise: 1 n V/√Hz, 2.6 p A/√Hz Ultralow distortion −117 d Bc at 1 MHz 2FEEDBACK VOUT7 High speed

3–IN NC6

−3 d B bandwidth: 600 MHz (G = +1)

Slew rate: 310 V/μs +IN –VS5

Offset voltage: 230 μV maximum

NC = NO CONNECT

Low input bias current: 100 n A

Figure 1. 8-Lead LFCSP_VD (CP-8-2)

Wide supply voltage range: 5 V to 12 V Supply current: 14.7 m A

ADA4899-1 1FEEDBACK DISABLE8

High performance pinout Disable mode

2–IN +VS7

3+IN VOUT6

APPLICATIONS

–VS –VS5

Analog-to-digital drivers Instrumentation Figure 2. 8-Lead SOIC_N_EP (RD-8-1)

IC IS TO TI (d c)

Filters IF and baseband amplifiers DAC buffers Optical electronics

www.BDTIC.com/ADI GENERAL DESCRIPTION The ADA4899-1 is an ultralow noise (1 n V/√Hz) and distortion The ADA4899-1 is available in a 3 mm × 3 mm LFCSP and an

(<−117 d Bc @1 MHz) unity-gain stable voltage feedback op 8-lead SOIC package. Both packages feature an exposed metal amp, the combination of which makes it ideal for 16-bit and paddle that improves heat transfer to the ground plane, which is 18-bit systems. The ADA4899-1 features a linear, low noise a significant improvement over traditional plastic packages. The input stage and internal compensation that achieves high slew ADA4899-1 is rated to work over the extended industrial

rates and low noise even at unity gain. The Analog Devices, Inc. temperature range, −40°C to +125°C.

proprietary next-generation XFCB process and innovative –40

circuit design enable such high performance amplifiers. VS = ±5V

–50 RL = 1kΩ The ADA4899-1 drives 100 Ω loads at breakthrough performance VOUT = 2V p-p –60

levels with only 15 m A of supply current. With the wide supply

voltage range (4.5 V to 12 V), low offset voltage (230 μV maxi-

mum), wide bandwidth (600 MHz), and slew rate (310 V/μs), –80

the ADA4899-1 is designed to work in the most demanding HD3

applications. The ADA4899-1 also features an input bias current HD2

cancellation mode that reduces input bias current by a factor of 60.

FREQUENCY (MHz)

Figure 3. Harmonic Distortion vs. Frequency

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